Hitachi, Ltd.

Eriko Koda

Shinji Kimura

Yumiko Sugita

Shouji Nakamura

Toshiyuki Kuwana

Reki Yamamoto

Kei Kudou

Masato Manda

A composite picture generating method is provided which superimposes an arbitrary image with a natural motion over a moving picture and allows the user to easily specify the position on the moving picture of the image to be superimposed. A moving picture over which an image is to be superimposed is selected and played on a display. The moving picture is temporarily stopped where the image is to be superimposed over the moving picture. The image is drawn and superimposed over the moving picture. When the image is determined, the playback of the moving picture is resumed as in a slow mode. As the moving picture is played, the locus of motion of the image is specified on the moving picture by using a pointing device or the like. The synthesizing of the image is performed by superimposing the image over the moving picture being played at the positions corresponding to the specified locus.

Composite picture generating method

When extraction start and end compressed pictures are specified from compressed moving picture data of MPEG (Moving Picture Experts Group) standard, a picture block is fixed which has compressed pictures arranged in the order of displaying with those start and end pictures selected for the opposite ends of the block. If the bidirectional prediction or previous prediction compressed pictures within the picture block have a picture to be required to expand by referring to an outside intraframe compressed picture and/or a previous prediction compressed picture that are out of the picture block, the outside prediction picture to be used for the expansion is added to the compressed pictures within the picture block to produce the range of data being edited. That is, at the time of editing the range of the picture block is changed so that the reference to outside data can be completed within the picture block in a closed manner.

Method and apparatus for editing compressed moving pictures and storage medium

A method, apparatus and computer program for detecting a scene change point in a moving picture which has been coded according to a moving-picture coding process. The moving picture coding process divides the processing picture into a plurality of pictures. Each picture is divided into a plurality of blocks each being compressed by an encoder. The encoder operates according to a selected one of three compression techniques, namely an intra-picture compression technique, a differential-picture compression technique or a skipped-block compression technique. The invention counts the number of blocks of each picture subjected to the compression techniques, records the counts as user data, and analyzes the counts stored in the user data in a decoding operation in order to detect a scene change point of the moving picture.

Scene-change-point detecting method and moving-picture editing/displaying method

A method for editing audio data includes the steps of creating a header portion containing at least information for indicating a start of an audio unit to be decoded and having composite elements whose values are equal to those of the audio data to which dummy data is to be added, and creating the audio data composed of the dummy data to be ignored during a decoding time. The system for editing audio data is also provided for executing the editing method.

Method and system for synchronization of decoded audio and video by adding dummy data to compressed audio data

Scene-change-point detecting method and moving-picture

A distributed drawing processing system which includes a drawing server for integratedly executing a string of drawing commands transmitted from a client program for graphics display. In the system, the client program divides the drawing command string into a drawing command block of a string of drawing commands processable on a parallel basis and a drawing command block of a string of drawing commands not processable on the parallel basis, and transmits the divided drawing command string blocks to the drawing server. The drawing server executes the drawing command string while judging whether to process it on the parallel or sequential basis with respect to each of the divided drawing command string blocks.

System for selectively performing parallel or sequential drawing

A graphics system using a part or the entire part of a plurality of general-purpose processors which can be processed in parallel for output processing which classifies a series of graphics output primitives which are sent to the graphics program from the application program into graphics output primitives which can be operated in parallel and graphics output primitives which cannot be operated in parallel, obtains the frequency of occurrences of graphics output primitives which cannot be operated in parallel among them, and automatically determines the number of processors to be allocated to the graphics program from this frequency of occurrences.

Growing community of inventors

Kawasaki, Japan

Eriko Koda